Automobile accessory die-casting die with pre-tightening mechanism

Abstract

The utility model relates to the technical field of die-casting dies, in particular to an automobile part die-casting die with a pre-tightening mechanism, which comprises a base, a lower die holder is fixedly arranged at the top of the base, a cavity is arranged at the top end in the lower die holder, an upper die holder is movably arranged at the top of the lower die holder, and a material injection port is arranged on one side of the top of the upper die holder. Supporting columns are fixedly arranged at the two ends of one side of the top of the base, a mounting plate is fixedly arranged between the top ends of the supporting columns, and a hydraulic cylinder is mounted at one end of the bottom of the mounting plate. According to the utility model, through the use of the pre-tightening mechanism, when the die is closed, the connecting point of the first spring and the limiting plate is fixed, and the first spring subjected to drawing force can provide pre-tightening force to the upper die holder, so that the upper die holder can be tightly attached to the lower die holder when the die is closed, and further, gaps among die parts are reduced; and the quality of finished products produced subsequently is improved, so that the actual use effect of the die-casting die is improved.

Description

Technical Field

[0001] This utility model relates to the field of die-casting mold technology, specifically to a die-casting mold for automotive parts with a pre-tightening mechanism. Background Technology

[0002] Automotive parts are the various units that make up a car and the products that serve the car. Die casting is a common process for manufacturing automotive parts, and die casting molds play a crucial role in the production of automotive parts.

[0003] Existing die-casting molds for automotive parts have several problems during use. Traditional die-casting molds often lack effective pre-tightening mechanisms, which can lead to gaps between various mold components during the die-casting process, affecting the quality and precision of the die-cast products. These gaps can cause problems such as burrs and dimensional deviations in the die-cast products. Utility Model Content

[0004] The purpose of this invention is to provide a die-casting mold for automotive parts with a pre-tightening mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A die-casting mold for automotive parts with a pre-tightening mechanism includes a base, a lower mold base fixedly mounted on the top of the base, a cavity opened at the top of the lower mold base, an upper mold base movably mounted on the top of the lower mold base, an injection port provided on one side of the top of the upper mold base, support columns fixedly mounted at both ends of one side of the top of the base, an mounting plate fixedly mounted between the top ends of the support columns, a hydraulic cylinder mounted on one bottom end of the mounting plate, a connecting plate fixedly mounted on the telescopic shaft end of the hydraulic cylinder, and a pre-tightening mechanism provided between the bottom ends of the connecting plate and the upper mold base;

[0007] Preferably, the pre-tightening mechanism includes a connecting rod, a connecting groove, a limiting plate, and a first spring. The connecting plate has connecting rods fixedly installed at both ends of its bottom. The upper mold base has connecting grooves inside its top two ends. The bottom end of the connecting rod passes through the upper mold base and is located inside the connecting groove via a mounting hole. A limiting plate is installed at one end of the connecting rod located inside the connecting groove. The first spring is sleeved on the outside of the bottom end of the connecting rod at the top of the limiting plate.

[0008] Preferably, the lower mold base has a cavity below the mold cavity;

[0009] Preferably, a partition plate is fixedly installed at the top of the cavity, a push rod is installed through a mounting hole on one side of the partition plate, a pressure plate is installed on the outer side of the bottom end of the push rod, a second spring is sleeved on the top of the pressure plate on the outer side of the push rod, the top end of the second spring is connected to the partition plate, and the top end of the push rod passes through the mounting hole and is located inside the cavity.

[0010] Preferably, a threaded rod is movably provided at the bottom of the cavity via a rotating shaft, and an inclined block is movably provided on the outer side of one end of the threaded rod via a threaded hole. Guide rods are fixedly provided on both sides of the threaded rod inside the cavity, and one end of the guide rod passes through the inclined block via a mounting hole.

[0011] Preferably, a roller is movably mounted at the bottom end of the top rod via a rotating shaft;

[0012] Preferably, a knob is provided on one side of the lower mold base at one end of the rotating shaft where the threaded rod is located.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a pre-tightening mechanism so that during mold closing, the connection point between the first spring and the limiting plate is fixed. The first spring, subjected to tensile force, provides pre-tightening force to the upper mold base, thereby ensuring that the upper mold base fits tightly against the lower mold base during mold closing. This reduces the gap between mold components, improves the quality of the finished products produced, and thus enhances the actual performance of the die-casting mold.

[0015] This utility model utilizes a push rod in conjunction with a threaded rod and an inclined block to facilitate quick and easy demolding of automotive parts after die-casting, thus improving production efficiency. The use of a partition, a second spring, and a pressure plate automatically assists in the push rod's resetting, facilitating subsequent die-casting and demolding processes, resulting in a highly effective push rod in practical use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a front sectional view of the present invention.

[0018] Figure 3 This is a side sectional view of the lower mold base of this utility model.

[0019] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 5 This utility model Figure 2 Enlarged diagram of point B in the middle.

[0021] In the diagram: 1. Base; 2. Lower mold base; 3. Cavity; 4. Upper mold base; 5. Injection port; 6. Support column; 7. Mounting plate; 8. Hydraulic cylinder; 9. Connecting plate; 10. Connecting rod; 11. Connecting groove; 12. Limiting plate; 13. First spring; 14. Cavity; 15. Partition plate; 16. Push rod; 17. Second spring; 18. Threaded rod; 19. Inclined block; 20. Roller; 21. Knob; 22. Pressure plate; 23. Guide rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 As shown, this utility model provides a technical solution:

[0024] A die-casting mold for automotive parts with a pre-tightening mechanism includes a base 1, a lower mold base 2 fixedly mounted on the top of the base 1, a cavity 3 opened at the top of the lower mold base 2, an upper mold base 4 movably mounted on the top of the lower mold base 2, an injection port 5 provided on one side of the top of the upper mold base 4, support columns 6 fixedly mounted at both ends of one side of the top of the base 1, an mounting plate 7 fixedly mounted between the top ends of the support columns 6, a hydraulic cylinder 8 mounted at one bottom end of the mounting plate 7, a connecting plate 9 fixedly mounted at the telescopic shaft end of the hydraulic cylinder 8, and a pre-tightening mechanism provided between the bottom ends of the connecting plate 9 and the upper mold base 4.

[0025] Through the above scheme, die casting is achieved by using hydraulic cylinder 8 to complete the mold closing operation between lower mold base 2 and upper mold base 4.

[0026] In this embodiment, preferably, the pre-tightening mechanism includes a connecting rod 10, a connecting groove 11, a limiting plate 12, and a first spring 13. The connecting rod 10 is fixedly provided at both ends of the bottom of the connecting plate 9. The connecting groove 11 is opened inside the top two ends of the upper mold base 4. The bottom end of the connecting rod 10 passes through the upper mold base 4 through the mounting hole and is located inside the connecting groove 11. The end of the connecting rod 10 located inside the connecting groove 11 is provided with a limiting plate 12. The first spring 13 is sleeved on the outside of the bottom end of the connecting rod 10 at the top of the limiting plate 12.

[0027] Through the above scheme, the use of the pre-tightening mechanism ensures that when the mold is closed, the first spring 13, which is under tension, provides a pre-tightening force to the upper mold base 4 because the connection point between the first spring 13 and the limiting plate 12 is fixed. This allows the upper mold base 4 to fit tightly against the lower mold base 2 when the mold is closed, thereby reducing the gap between mold components and improving the quality of the finished products produced later. This improves the actual performance of the die-casting mold.

[0028] In this embodiment, preferably, a cavity 14 is provided inside the lower mold base 2 below the cavity 3;

[0029] With the above scheme, the cavity 14 is used to accommodate structures such as the partition 15, the push rod 16, the second spring 17, and the inclined block 19.

[0030] In this embodiment, preferably, a partition 15 is fixedly provided at the top of the cavity 14, a push rod 16 is provided through a mounting hole on one side of the partition 15, a pressure plate 22 is provided on the outer side of the bottom end of the push rod 16, a second spring 17 is sleeved on the top of the pressure plate 22 on the outer side of the push rod 16, the top of the second spring 17 is connected to the partition 15, and the top of the push rod 16 passes through the mounting hole and is located inside the cavity 3.

[0031] The above scheme is used to demold the automotive parts by using the ejector rod 16, and the second spring 17 is used to reset the ejector rod 16 after use.

[0032] In this embodiment, preferably, a threaded rod 18 is movably provided at the bottom of the cavity 14 via a rotating shaft, and an inclined block 19 is movably provided on the outer side of one end of the threaded rod 18 via a threaded hole. Guide rods 23 are fixedly provided on both sides of the threaded rod 18 inside the cavity 14, and one end of the guide rod 23 passes through the inclined block 19 via a mounting hole.

[0033] The above scheme allows the ejector pin 16 to move upwards and demold the automotive parts by using the threaded rod 18 in conjunction with the inclined block 19.

[0034] In this embodiment, preferably, a roller 20 is movably provided at the bottom end of the top rod 16 via a rotating shaft;

[0035] Through the above scheme, the use of roller 20 enables the bottom end of push rod 16 to move smoothly along the surface of inclined block 19 when it is pushed by inclined block 19.

[0036] In this embodiment, preferably, a knob 21 is provided on one side of the lower mold base 2 at one end of the rotating shaft where the threaded rod 18 is located;

[0037] The above scheme allows the threaded rod 18 to be rotated by using the knob 21;

[0038] In this embodiment, an automotive parts die-casting mold with a pre-tightening mechanism is used. The hydraulic cylinder 8 completes the mold-closing operation between the lower mold base 2 and the upper mold base 4 to achieve die casting. After mold closing, the connecting rod 10 continues to move along the direction of the connecting groove 11, stretching the first spring 13. The first spring 13 generates a pre-tightening force. Since the connection point between the first spring 13 and the limiting plate 12 is fixed, the first spring 13 can pull the upper mold base 4 to provide a downward force, thereby ensuring that the upper mold base 4 fits tightly against the lower mold base 2 during mold closing. This reduces the gap between mold components, improves the quality of the subsequently produced finished products, and thus enhances... To demonstrate the actual effectiveness of the die-casting mold, after the die-casting process is completed, the operator can use the knob 21 to drive the threaded rod 18 to rotate. The inclined block 19, which is limited by the guide rod 23, will move horizontally. Since the bottom end of the ejector rod 16 contacts the upper surface of the inclined block 19 through the roller 20, as the inclined block 19 moves, the ejector rod 16 will lift the automotive parts located inside the cavity 3, thereby achieving rapid demolding of the parts and improving production efficiency. After the automotive parts are removed, the operator needs to reset the inclined block 19. The ejector rod 16 will move down and reset under the force of the second spring 17, thus facilitating subsequent die-casting and demolding operations.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A die-casting mold for automotive parts with a pre-tightening mechanism, comprising a base (1), characterized in that: The base (1) is fixedly provided with a lower mold base (2) at the top. The lower mold base (2) has a cavity (3) at the top. The lower mold base (2) is movably provided with an upper mold base (4) at the top. The upper mold base (4) has an injection port (5) on one side of its top. The base (1) has support columns (6) fixedly provided at both ends of one side of its top. The support columns (6) have an installation plate (7) fixedly provided between their top ends. The installation plate (7) has a hydraulic cylinder (8) installed at one bottom end. The extension shaft of the hydraulic cylinder (8) has a connecting plate (9) fixedly provided. The connecting plate (9) has a pre-tightening mechanism between its bottom ends and the upper mold base (4).

2. The automotive parts die-casting mold with a pre-tightening mechanism according to claim 1, characterized in that: The pre-tightening mechanism includes a connecting rod (10), a connecting groove (11), a limiting plate (12), and a first spring (13). The connecting plate (9) has connecting rods (10) fixedly installed at both ends of its bottom. The upper mold base (4) has connecting grooves (11) inside its top two ends. The bottom end of the connecting rod (10) passes through the upper mold base (4) through the mounting hole and is located inside the connecting groove (11). The end of the connecting rod (10) located inside the connecting groove (11) is provided with a limiting plate (12). The top of the limiting plate (12) is fitted with a first spring (13) on the outside of the bottom end of the connecting rod (10).

3. The automotive parts die-casting mold with a pre-tightening mechanism according to claim 1, characterized in that: The lower mold base (2) has a cavity (14) below the cavity (3).

4. A die-casting mold for automotive parts with a pre-tightening mechanism according to claim 3, characterized in that: A partition plate (15) is fixedly installed at the top of the cavity (14). A push rod (16) is installed through a mounting hole on one side of the partition plate (15). A pressure plate (22) is installed on the outer side of the bottom end of the push rod (16). A second spring (17) is sleeved on the top of the pressure plate (22) on the outer side of the push rod (16). The top of the second spring (17) is connected to the partition plate (15). The top of the push rod (16) passes through the mounting hole and is located inside the cavity (3) through the lower mold base (2).

5. A die-casting mold for automotive parts with a pre-tightening mechanism according to claim 3, characterized in that: A threaded rod (18) is movably provided at the bottom of the cavity (14) via a rotating shaft. An inclined block (19) is movably provided on the outer side of one end of the threaded rod (18) via a threaded hole. Guide rods (23) are fixedly provided on both sides of the threaded rod (18) inside the cavity (14). One end of the guide rod (23) passes through the inclined block (19) via a mounting hole.

6. A die-casting mold for automotive parts with a pre-tightening mechanism according to claim 4, characterized in that: The bottom end of the top rod (16) is movably equipped with a roller (20) via a rotating shaft.

7. A die-casting mold for automotive parts with a pre-tightening mechanism according to claim 5, characterized in that: A knob (21) is provided on one side of the lower mold base (2) at one end of the shaft where the threaded rod (18) is located.

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